Attachment for grates



' March 4 1924.

1,485,545 N. J. ZUZULIN ATTACHMENT FOR GRATES Filed Aug. 14, 1923 gnuawi o't .ZVie/wlas JZuzuZzh Fatented Mar. 4, 1924.

Funnel); T ES NICHOLAS ZUZULIN, or mam, uonrn' pa e V Application filed August 14,21923. Serial No. 657,289;

To all whom it may concern:

Be it known that I, NICHOLAS a citizen of the United States, residing'at Minot, in'the county of Ward and State of North Dakota, have invented certain new and useful Improvements in Attachments for Grates, of which the following is a specification. V I I My invention relates to'a supporting device for coal, such as fine coal, for useini connection with the grate and fire box of a stove or furnace, to provide a suitable supply of air to the coal, in efiecting proper combustion. 7

An important object of the invention is to provide a device of the above mentioned character, which is simple in'construction, and highly efficient in operation,

A further object of the invention is to provide a device of the above mentioned character, which may be used in connection with the attachment for grate shown in my copending application for attachment for grate, filed July 11th, 1923, bearing Serial No. 650,767.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification, and in whichlike numerals are employed to designate 'like parts throughout the same,

Figure 1 is a plan view of a device embodying my invention, 7

Figure 2 is a side elevation of the same,

Figure 3 is a vertical section taken on line 33 of Figure 1, and, V

Figure 4: is a side elevation of the supporting element, applied to a support.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a crown-shaped supporting element, which is preferably a casting of suitable metal. This supporting element is provided centrally with an upstanding air chamber 6, closed at its top 7, and opened at its bottom, as shown. Leading into the central portion of the chamber 6 are radiating ports 8, inclined downwardly, as shown. Leading into the top portion of the chamber 6 are radiating ports 9, inclined upwardly, and discharging beneath and adjacent to the shoulder 10, formed by the taperedcap 11 of the supporting element.

Mounted upon the upper end of the cap.

J. ZUZULIN,

11 are radiating ribs 12, which may be inte-' gral therewith, and these ribsextend downwardly from-a curved end'13, and over the shoulder 10, as shown.

The supporting element 5 is provided near its center, and outwardly'of the ports '8, with downwardly extending openings 14:, adapted to receive thef'rounded ends of upstandingfingers 15 of a' support 16. Thelfingers 15 are carried by radiating arms 17, preferably merging at their inner-ends into a'ball 18.

section 19, as shown.

In use, the supporting element 5 is arranged concentrically within a circular 'fire box, with its support 16 resting upon the grate sections 19. The fine coal being fed into the fire box about the supporting eleproject 1 he support is preferably an integral cast-- .IIlg. r

The support 16 is arranged upon the grate ment 5 holds the same in a substantially vertical position. The supporting element 5, provides means whereby the air passing upwardly through the grate may enter the chamber 6 and then discharge through ports 8 and 9 to various portions ofthe surrounding fine coal, and once eifect properoombustion.

In Figure 4, I have shown a modified use of. the device. In this figure,-I contemplate the use of a plurality of the supporting elements 5, which may be made smaller, if de' sired. The supporting element 5 is shown as mounted upon a support shown in my copending application for attachment for grate, filed July'llth, 1923, Serial No. 650,

' 767. 'The. element 5 is sufliciently large to span a pair of the members 13, each of which carries a pair of fingers 15, which project into the recesses 14. V

' It is obvious that the supporting elements 5 may be made in various sizes, depending upon the particular use of the same.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape size, and arrangement of part may be resorted to without departing from the s irit of the invention or the scope of the subjomed claims. 7 V

Having thus described my invention, what I claim is: I

1. A coal supporting device of the character described, comprising a enerally crown shaped member arranged a ove the grate of the fire box, said member having an upper portion forming a shoulder, said member being provided with a central upstanding air chamber having its top closed and its bottom open, said member having a lower set of downwardly inclined radiating ports in communication with the air chamber and an upper set of upwardly inclined radiating ports in communication with said chamber, and radiating downwardly inclined ribs carried by the said upper portion and projecting over said shoulder.

2. A coal supporting device of the character described, comprising a generally crown-shaped member arranged above the grate of the fire box, said member having an upwardly tapering upper portion forming a shoulder at its lower end, and also having an intermediate outwardly bulging portion tapering upwardly and downwardly and projecting radially beyond said shoulder Zor a substantial distance, said member having a centrally arranged upstanding air chamber with upwardly inclined radiating ports leading therein and discharging outwardly adj acent to the shoulder of the upper portion and also having downwardly inclined radiating ports in communication with the chamber and discharging at their outer ends adj aoent to the lower reduced end ofthe bulging intermediate portion, said intermediate NICHOLAS J. ZUZULIN. 

